:root {
    --primary: #FF9BB3;
    --secondary: #A2D5F2;
    --accent: #FFD166;
    --text: #5A5A5A;
    --bg: #FFF5F7;
}

body {
    font-family: 'Comic Neue', cursive;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.bubble-container {
    position: relative;
    z-index: 10;
    width: 90%;
    max-width: 500px;
    padding: 20px;
}

.header-bubble, .upload-bubble, .player-bubble {
    background: white;
    border-radius: 30px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    text-align: center;
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.header-bubble:hover, .upload-bubble:hover, .player-bubble:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 25px rgba(0,0,0,0.15);
}

h1 {
    color: var(--primary);
    font-family: 'Baloo 2', cursive;
    font-size: 2.5rem;
    margin: 0;
}

.subtitle {
    color: var(--secondary);
    font-size: 1.1rem;
    margin-top: 5px;
}

.cloud-icon {
    font-size: 3rem;
    margin: 10px 0;
    animation: float 3s ease-in-out infinite;
}

.upload-btn, #convert-btn, #download-btn {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    font-family: 'Baloo 2', cursive;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    margin: 10px 0;
}

.upload-btn:hover, #convert-btn:hover, #download-btn:hover {
    background-color: #ff7a9b;
    transform: scale(1.05);
}

.file-name {
    color: var(--secondary);
    font-style: italic;
    margin: 10px 0;
}

.hidden {
    display: none;
}

/* Floating bubbles animation */
.floating-bubbles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.bubble {
    position: absolute;
    background-color: rgba(162, 213, 242, 0.3);
    border-radius: 50%;
    animation: float-up 15s linear infinite;
}

.bubble:nth-child(1) {
    width: 100px;
    height: 100px;
    left: 10%;
    top: 100%;
    animation-delay: 0s;
}

.bubble:nth-child(2) {
    width: 150px;
    height: 150px;
    left: 50%;
    top: 100%;
    animation-delay: 5s;
}

.bubble:nth-child(3) {
    width: 70px;
    height: 70px;
    left: 80%;
    top: 100%;
    animation-delay: 8s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes float-up {
    0% { 
        transform: translateY(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    100% { 
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}